It's one of the few times during their two years that missionaries for The Church of Jesus Christ of Latter-day Saints are allowed such personal contact with their families.
The annual Mother's Day call isn't for the missionaries' benefit. It's for their moms. It addresses one of the great ironies of raising an LDS boy: Just about the time you start to like him, he leaves town.
On Sunday, Sheldon and Lori Woods of Herriman telephoned their son Cameron, who is nearing the end of his two-year mission to Korea.
Based on weekly e-mails, Lori says her son has definitely changed during the two years.
But it's been the rare phone calls that have helped her realize he is still Cameron.